Alarm Keypad (1st gen) no longer makes sound, for keypresses or otherwise

My 1st gen keypad stopped producing any sound. It produces no chirps, makes no beeps corresponding to key presses, or anything else. I have reset the keypad both via the pinhole reset alone, as well as by holding down the #5 on the keypad to do a hard factory reset, then re-added the device to my Ring system. I have also ensured that the volume is turned up under the device sound options, and the 'chirp' toggle is enabled. It's as if the speaker simply stopped working. Please advise.